Upcoming SlideShare
×

# How to Solve a Rubik's Cube

17,088 views

Published on

created for technical and business writing class

2 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
Your message goes here
• Be the first to comment

Views
Total views
17,088
On SlideShare
0
From Embeds
0
Number of Embeds
12
Actions
Shares
0
193
0
Likes
2
Embeds 0
No embeds

No notes for slide

### How to Solve a Rubik's Cube

1. 1. Rubik’s Cu beHow to Solve a
2. 2. Table of ContentsIntroduction…………………………………………………………………………………………………………3Notations…………………………………………………………………….………………………………………4Step 1: Solve Cross………………………………………………………………………………………5,6,7,8Step 2: Solve Corners………………………………………………………………………………………9,10Step 3: Solve Row 2 Corner Pieces………………………………………………………………..11,12Step 4: Solve Cross…………………………………………………………………………………………….13Step 5: Solve Top Row Center Block…………………………………………………………………..14Step 6: Solve Corners……………………………………………………………………………….……15,16
3. 3. Introduction Basic Historyhe infamous Rubik’s Cube has been puzzling the minds of millionssince its creation in 1974. The originally dubbed “Magic Cube,” wasinvented by a Hungarian Sculptor and professor of architectureErno Rubik. The toy was licensed by Rubik, and sold by Ideal ToyCorp in 1980, and won the German Game of the Year for the BestPuzzle of the year. As of January 2009, 350 million cubes havebeen sold worldwide. Objectivehe goal of this instruction manual is to provide the basic tutorialon how to properly solve the Rubik’s Cube. While you may notsolve the puzzle as quickly as Feliks Zemdegs of Australia (recordof 6.63 seconds), you will undoubtedly solve this daunting taskand have superior bragging rights over others. WARNING olving the Rubik’s Cube will undeniably cause stress to the individual completing the task. This high level of stress may cause person to sweat profusely, mutter under their breath, swear uncontrollably, and/or throw the Cube or other foreign (possibly larger) objects across the room. Fear not, this is all apart of the “fun” in the game.
4. 4. NotationsThere are 6 colors represented on the Rubik’s cube (one color per face side) Terminology Column 1 Column 2 Column 3 Block: an individual “cube”/peg on the Rubik’s Cube Rows: Horizontal (3 blocks across) Row 1 Columns: Vertical (3 blocks up & down) Side: 3x3 blocks of the Rubik’s Cube Row 2 Sides Front:: side “facing” you Left: face front, side to the left Up: top side Right: face front, side to the right Row 3 Down: bottom side Back: side opposite of face Rotation Methods F= Front Fi=Front inverted U= Up Ui= Up inverted D= Down All Done Clockwise (CW) All Done Counter-Clockwise (CCW) Di= Down inverted L= Left Li= Left inverted R= Right Ri= Right inverted Simplify Rotation Methods (if looking at cube from face side)F: twist right-CW L: twist towards you Fi: twist left-CCW Li: twist away from youU: twist right R: twist away from you Ui: twist left Ri: twist towards youD: twist right Di: twist left
5. 5. Step 1Identify starting point: for simplicity sake, start on Green Side (Up Side) DON’T KNOW HOW TO TELL WHICH SIDE IS WHICH?—> The center block is key. This block never moves Solve for Green Cross The areas circled in yellow all make up the green cross. These green pieces must be found first in order to com- plete the rest of this side. (image 1) 1. Search for green pieces elsewhere on the Rubik’s Cu- be. Since these pieces are all “middle” blocks they will be in the same position (either middle block of a row or column) on another side of the Rubik’s Cube.  In image 2, the down side is portrayed with a green block in the right position. As noted, the red part of this particular block is shown.  It is essential to note the other colors shown on that particular block because these need to line up with its colored face side as well.  The next step is shown in image 3, by rotating the Down Side until the red blocks line up.  Last, rotate this Top Side (Red Side) clockwise twice so the green/red block matches up with green face. (image 4)
6. 6. Step 1 Continued...2. Locate the second green piece of the cross This green piece is found on the Down Side of the Rubik’s Cube . Note the white face of this block is also showing. (Image 5) Rotate the Down side to the White face of the Rubik’s Cube. (Image 6) Rotate the white face side (front side) clockwise until green block matches up with green face side (up side). (Image 7) Image 7 also depicts our starting point for our next step in solving our 3rd block of the green cross.
7. 7. Step 1 Continued... 3. Locate the third green piece. (Image 7/8)  Rotate Front Side counter clockwise so green block is in the Row 3. (Image 9)  Rotate Down Side right so green/yellow block is on the yellow face side. (Image 10)  Rotate front side (yellow side) clockwise twice so green block n t fro matches up with green face side.  When this occurs and the green/yellow block are in the right po- sition but “inverted” (instead of green, green, yellow, yellow, we see green, yellow, green, yellow) we must perform our first algo- rithm. This step is repeated as many times as needed to get the block in the right positionfro n t Fi U Li Ui Front inverted. Up. Left inverted. Up inverted Here we get our desired result of our green/yellow block in the correct orientation. Algorithms used in this step: Fi U Li Ui
8. 8. Step 1 Continued... 2. Locate the fourth and final cross piece (Image 12)  As shown in image 12 the last green block is located on the down side of the Rubik’s Cube. Also, note that orange is visible , yet al- ready on the orange face side.  Rotate Front Side (orange face side) clockwise until orange/green block lines up with green face side.  Again, use the algorithm demonstrated on page 7 Fi U Li Ui Front inverted. Up. Left inverted. Up invertedNote: Remember that the Rubik’s Cubehas over 43 quintillion possible combina-tions. This in mind, your Rubik’s Cube Here we have the final result of Step 1may not start in the same orientation asthe one generated in this manual. How-ever, the basic rules remain:1. line up your colored cube in the bottom row of it’s desired location and in the same face as the other color shown on that particular block.2. If block is inverted when transferring Algorithms used in this step: to its proper location use the algo- rithm shown in this step to correct. Fi U Li Ui
9. 9. Step 2 Solve Four Corners1. Locate first green color corner block (Image 1) Similar to step 1, line the block in the 3rd (bottom) row under the desired position. Pay attention to the colors on the particu- lar block shown: the white and red faces of this block are also showing. Rotate Down Side clockwise so block indicated is on the white/ red corner. (Image 2) NOTE: the white face of the block does not need to be on the white side just like the red face of the block does not need to be on the red side. Let Red Face side be Front Side. Use the Algorithm: Ri Di R D Right inverted. Down inverted. Right. Down. Repeat this algorithm as many times as needed to get the green/red/white block up to the green face side (up side). (Image 3) Algorithms used in this step: Ri Di R D
10. 10. Step 2 Continued...2. Locate the second corner block (Image 4) Here the red and yellow faces of the block are visible. Rotate the Down Side clockwise so the block indicated is on the red/yellow corner. (Again, it is okay if the colors are inverted.) Repeat algorithm shown on page 9 (refer to bottom right corner of page). Image 5 shows final position for the green, yellow, red block as well as starting position for the third corner block3. Locate the third corner block (Image 5) Rotate to the yellow/orange corner Repeat algorithm4. Locate fourth and final corner block (Image 6) Rotate to white/orange corner Repeat algorithm5. Green face complete! (Image 7)But, if done correctly, the first row of all surround sides [except downside/blue side) and middle block will be solved as well. Algorithms used in this step: Ri Di R D
11. 11. Step 3Flip Rubik’s Cube over so solved side( Green Side) is down -Blue Side up Solve Row 2 Corner Pieces 1. Look for one of the 4 pieces (highlighted in image 1) that does not have blue in it on both top and side levels.  Image 2 shows the only block of these 4 (shown in image 1) that does not have any blue in any of its shown faces. 2. Rotate Up Side counter clockwise so yellow face of the red/ yellow block lines up with the yellow face side . The Yellow Side is now Front Side. (Image 3)  As noted before, the red face of this block is on the Up Side.  The goal is to move this block, so its red face is on the Red Side of the Rubik’s Cube. (Red Side is to the Left of the Yellow Side)  To do this, use the algorithm below to move the block to the left Ui Li U L U F Ui Fi Up inverted. Left inverted. Up. Left. Up. Front. Up inverted. Front inverted Image 4 shows the red/yellow block in its correct orientation Algorithms used in this step: Ui Li U L U F Ui Fi
12. 12. Step 3 Continued...1. Refer to the 4 top pieces again. (Image 5) As shown in image 5 there is only one block that does not contain blue. As shown in image 6, both the orange and yellow face of this block are visible.2. Rotate Up Side clockwise twice so the yellow face of the blockmatches up with the Yellow Side of the Rubik’s Cube. (Image 7) From image 7, it is also noticeable that the Orange Side of the Ru- bik’s Cube is to the right of the Yellow Side. Make Yellow Side Front Side3. To get this block to its yellow/orange row 2 corner the followingalgorithm must be used. U R Ui Ri Ui Fi U F Up. Right. Up inverted. Right inverted. Up inverted. Front inverted. Up. Front NOTE: This algorithm to move block to the right is the opposite of how to move a block to the left. Repeat these steps for the remaining 2 corner blocks. Remember there are 2 different algorithms used to move the block to either the right or left.  If done correctly row 2 and 3 should be completed on all 4 sides Algorithms used in this step: U R Ui R Ui Fi U F
13. 13. Step 4 Solve Blue Cross1. Once you have solved the first two layers (Row 2 and 3), you’re going to have one of four different positions on the top Blue Side. Option 1: center blue dot (Image 1) Option 2: an L (Image 2) Option 3: center line (Image 3) Option 4: the cross (Image 4)Note: if this is present, skip to next step The goal is to solve this blue cross2. Looking at this particular Rubik’s Cube, Option 3 is represented(central line). Turn it so the line is horizontal. Let Red Side be Front Side,Blue Side be Up Side. (Image 4)3. Use the algorithm to complete this step: F R U Ri Ui Fi Front. Right. Up. Right Inverted. Up Inverted. Front Inverted. If Option 1 and 2 are present, repeat this step Algorithms used in this step: F R U Ri Ui Fi
14. 14. Step 5 Solve for Top Row , Center BlockNote the other colors visible on these four cross pieces.(Images 1 & 2)1. Rotate Up Side — at least two of these color blocks will match up with their coordinating color sides (Images 3 & 4)2. For this manual, all sides lined up, but if this is not the case hold the cube so one of the matched up sides is directly opposite from you (Back Side) and the other is in your right hand. Use the algorithm: R U Ri U R U U Ri Right. Up. Right Inverted. Up. Right. Up. Up. Right Inverted. One final twist of the Up Side should line up all these top centered-blocks with their appropriate color sides Sometimes, the two sides that line up are opposite one another. When this occurs hold the cube so one is in the Front Face and the other is in the Back Face and do the algorithm shown above and repeat. As a result, the center block of Row 1 on all four faces (Front, Back, Right, Left) should be lined up with their matching face colors Algorithms used in this step: R U Ri U R U U Ri
15. 15. Step 6 Solve for Corner Pieces Look at 4 corners and find one that is in the correct loca- tion. (Image 1) NOTE: the white face of the block does not need to be on the white side just like the red face of the block does not need to be on the red side. Use the algorithm to get the four corner pieces in the ap- propriate location. (Let Blue Side be Up Side) Should not have to repeat this step more than twice. U R Ui Li U Ri Ui L Up. Right. Up Inverted. Left Inverted. Up. Right Inverted. Up Inverted. Left. Images 2-5 show the finished product of this step Algorithms used in this step: U R Ui Li U Ri Ui L
16. 16. Step 1 Continued... Solve Four Corners1. Look at the 4 corner pieces.NOTE: In this manual the red/white/blue corner piece in already inthe correct orientation (skip down to #2 ) The corner you are solving for should be in the right corner Use the algorithm previously shown in Step 2: Ri Di R D Right inverted. Down inverted. Right. Down. (Repeat as many times as needed)2. Once this is in the correct location, rotate ONLY the Up Side tomove the next unsolved block to the bottom right corner.3. IT MAY APPEAR THAT YOU ARE MESSING UP EVERYTHING YOUHAVE ALREADY DONE BUT IT WILL COME TOGETHER IN THE END.4. When you have adjusted all 4 corners you will notice you are justone/ two turns away from solving your first Rubik’s Cube Twist Up Side and Celebrate with your Victory Dance